diff --git a/setup/db/db/schema-302to40.sql b/setup/db/db/schema-302to40.sql
index 2b47969aff4..aaf23e6bf9a 100644
--- a/setup/db/db/schema-302to40.sql
+++ b/setup/db/db/schema-302to40.sql
@@ -237,7 +237,7 @@ ALTER TABLE physical_network_service_providers DROP FOREIGN KEY fk_pnetwork_serv
 SET @constraintname = (select CONCAT(CONCAT('DROP INDEX ', A.CONSTRAINT_NAME), ' ON physical_network_service_providers' )
 from information_schema.key_column_usage A
 JOIN information_schema.key_column_usage B ON B.table_name = 'physical_network_service_providers' AND B.COLUMN_NAME = 'provider_name' AND A.COLUMN_NAME ='physical_network_id' AND B.CONSTRAINT_NAME=A.CONSTRAINT_NAME
-where A.table_name = 'physical_network_service_providers');
+where A.table_name = 'physical_network_service_providers' LIMIT 1);
 
 PREPARE stmt1 FROM @constraintname; 
 EXECUTE stmt1;